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Intercooler

a technology of intercooler and cooling water, which is applied in the direction of indirect heat exchangers, machines/engines, light and heating apparatus, etc., can solve the problems of reducing the boiling point reducing the efficiency of the cooling water, and reducing the cooling water pressure loss, so as to reduce the strength and breakage, prevent the boiling of the second cooling water, and reduce the effect of pressure loss

Active Publication Date: 2020-04-07
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention aims to prevent boiling of the cooling medium in an intercooler which is used to cool supercharged intake air. This is achieved by using two kinds of cooling medium with different temperatures. The invention prevents heat from being transferred from the supercharged intake air to the second cooling medium in the outlet side passage, thus avoiding boiling of the second cooling medium and reducing the likelihood of temperature increase and component strength reduction.

Problems solved by technology

Since the hot cooling water flow path has the U-turn structure, a narrow flow path, and inner fins, a pressure loss of the cooling water may be large, and the boiling point of the cooling water may decrease.
As a result, the cooling water may boil in the downstream flow path in the hot cooling water path.
If the cooling water boils in the hot cooling water flow path, it may cause a temperature increase of components around the hot cooling water flow path, and accordingly a strength of the components may decrease and the components may be damaged.

Method used

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first embodiment

[0019]A first embodiment of the present disclosure will be described with reference to the drawings. In the first embodiment, an example in which an intercooler of the present disclosure is applied to a supercharged intake air cooling system for a vehicle will be described.

[0020]A supercharger (not shown) for supercharging intake air to an engine 10 is provided in an intake air system of the engine 10 of the vehicle (that is, an internal combustion engine). This supercharger is provided to compensate for the maximum output of the engine 10. That is, the vehicle of the present embodiment has the engine 10 made smaller for higher fuel efficiency and the supercharger is used to compensate for the maximum output reduced in exchange for making the engine 10 smaller.

[0021]An intercooler 20 cooling engine intake air is located downstream of the supercharger in the intake air system with respect to a flow of the intake air. The intercooler 20 cools the supercharged intake air that has been ...

second embodiment

[0049]Next, a second embodiment of the present disclosure will be described. In the second embodiment, only parts different from the above-described first embodiment will be described. In the second embodiment, the configuration of the fin 22 is different from that of the first embodiment.

[0050]As shown in FIGS. 6 and 7, in the second embodiment, a step portion 22d is provided in the peak portion 22b of the fin 22 at a portion corresponding to the non-bonded portion 30. The height of the step portion 22d is lower than the other portion of the peak portion 22. Therefore, in the non-bonded portion 30, a gap is formed between the flow path tube 21 and the fin 22. The step portion 22d can be provided by means such as pressing a portion corresponding to the non-bonded portion 30 of the peak portion 22b.

[0051]According to the second embodiment, since a gap is formed between the flow path tube 21 and the fin 22 in the non-bonded portion 30, the heat of the supercharged intake air can be s...

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Abstract

An intercooler includes flow path tubes and fins stacked with each other. Cooling medium includes first cooling medium and second cooling medium. A second cooling medium flow path of the flow path tubes is located upstream of a first cooling medium flow path with respect to supercharged intake air. The second cooling medium flow path includes a second U-turn portion. In the second cooling medium flow path, a downstream flow path located downstream of the second U-turn portion is located upstream, in a flow direction of the supercharged intake air, of an upstream flow path located upstream of the second U-turn portion. A heat exchange limiting portion is provided at a position between the flow path tubes and the fins, the position being adjacent to a most upstream part, in the flow direction of the supercharged intake air, of the downstream flow path.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a U.S. National Phase Application under 35 U.S.C. 371 of International Application No. PCT / JP2016 / 087725 filed on Dec. 19, 2016 and published in Japanese as WO / 2017 / 138259 A1 on Aug. 17, 2017. This application is based on and claims the benefit of priority from Japanese Patent Application No. 2016-024231 filed on Feb. 11, 2016. The entire disclosures of all of the above applications are incorporated herein by reference.TECHNICAL FIELD[0002]The present disclosure relates to an intercooler for cooling intake air supercharged by a supercharger.BACKGROUND ART[0003]An intercooler that cools supercharged intake air is known, which performs heat exchange between the supercharged air supplied to an engine by a supercharger and two types of cooling water having temperatures different from each other (see, for example, Patent Literature 1). In the intercooler disclosed in Patent Document 1, the hot cooling water makes a U-turn o...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): F02B29/04F28D9/00
CPCF02B29/04F28D9/0056F02B29/0443F01P2060/02Y02T10/146Y02T10/12
Inventor KUROYANAGI, ISAOHARADA, MASAKIKAWAGUCHI, TAKEFUMI
Owner DENSO CORP
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